Regional Weather Summary
Issued by NWS Chicago, IL

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AWUS83 KLOT 192126
RWSLOT
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
200530-

WEATHER SUMMARY FOR NORTHERN ILLINOIS AND NORTHWEST INDIANA
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
426 PM CDT SUN APR 19 2015

RAIN SHOWERS ASSOCIATED WITH LOW PRESSURE LIFTING NORTH ACROSS THE
MID MISSISSIPPI VALLEY MOVED NORTHWARD ON SUNDAY AFTERNOON. PRIOR
TO THE OVERCAST SKIES AND RAIN...TEMPERATURES NORTH OF THE
ILLINOIS AND KANKAKEE RIVERS AND AWAY FROM THE ILLINOIS SHORE REACHED
THE LOWER TO MID 70S. ONSHORE WINDS KEPT ILLINOIS SHORE LOCATIONS
IN THE 50S...AND TEMPERATURES FELL INTO THE 50S FROM SOUTH TO
NORTH AS THE RAIN SHOWERS BEGAN. THE LOW PRESSURE WILL STRENGTHEN
AS IT MOVES TO LOWER MICHIGAN SUNDAY NIGHT...WITH RAIN SHOWERS
CONTINUING INTO SUNDAY EVENING...FOLLOWED BY A LULL OVERNIGHT.
LOWS BY EARLY MONDAY WILL BE IN THE UPPER 40S TO LOWER
50S...EXCEPT MID 40S ALONG THE LAKE COUNTY ILLINOIS SHORE.

AN UPPER LEVEL DISTURBANCE ON THE SOUTHWEST SIDE OF THE DEPARTING
LOW WILL BRING A RETURN TO FAIRLY WIDESPREAD RAIN SHOWERS MONDAY
MORNING...FOLLOWED BY DRYING CONDITIONS DURING THE AFTERNOON.
HIGHS MONDAY WILL BE MUCH COOLER IN THE MID 50S TO NEAR 60 ALONG
WITH STRONG WESTERLY WINDS GUSTING UP TO 35 MPH. TUESDAY WILL BE
SIMILAR TO MONDAY IN TERMS OF TEMPERATURES AND STRONG WESTERLY
WINDS...BUT MUCH OF THE DAY WILL BE DRY EXCEPT FOR A CHANCE FOR
ISOLATED SHOWERS NORTH OF INTERSTATE 80 DURING THE AFTERNOON. AN
EXPANSIVE AREA OF COOL UPPER LEVEL LOW PRESSURE WILL SET UP OVER
THE GREAT LAKES REGION THROUGH THE REMAINDER OF THE WORK
WEEK...KEEPING UNSEASONABLY CHILLY CONDITIONS IN PLACE...WITH
HIGHS IN THE 50S AND OVERNIGHT LOWS IN THE 30S.

$$

RC



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